French astronaut Thomas Pesquet floated into space on his first-ever spacewalk on Friday, on a mission to help upgrade the power system outside the International Space Station with new, refrigerator-sized lithium-ion batteries. Wearing a white spacesuit with the French flag emblazoned on one shoulder, Pesquet and American astronaut Shane Kimbrough switched on their spacesuits’ internal battery power to mark the official start of the spacewalk at 6.22am, more than a half hour earlier than scheduled.